{Reference Type}: Case Reports {Title}: Resection of primary left renal vein leiomyosarcoma with renal preservation following an unusual clinical presentation. {Author}: Cholankeril TJ;Lou J;Spitz F;Tjaden B; {Journal}: BMJ Case Rep {Volume}: 17 {Issue}: 3 {Year}: 2024 Mar 18 暂无{DOI}: 10.1136/bcr-2023-254856 {Abstract}: An elderly man was referred to vascular surgery on incidental discovery of a left retroperitoneal mass ultimately found to be of left renal vein (LRV) origin. He initially presented with recurring lower back pain. CT of the abdomen/pelvis showed a 6.0×5.5 cm lobulated retroperitoneal mass anterior to the infrarenal aorta. Resection of the mass necessitated a multidisciplinary team consisting of medical oncologists, radiation oncologists, urologists and vascular surgeons. In efforts to obtain an R0 margin, en-bloc resection of the LRV from its confluence with the inferior vena cava (IVC) was necessary. A primary repair of the IVC was performed with preservation of the left kidney. The patient's back pain has since resolved after the surgery. A literature search found IVC reconstructions to be safe and effective in the removal of vascular leiomyosarcomas.